...常是用现在完成时或现在完成进行时的。如：She has played the piano since she was a child. 她从下就弹钢琴。I’ve loved you ever since I met you. 自从我见到你，我就一直爱你。They’ve moved twice since they got married. 他们结婚后已搬了两次家。They ...
The XRD patterns of both the samples were well indexed to the standard cubic CsPbBr3 phase, with no observable secondary phases。个人理解：with no observable secondary phases 有种补充说明的意思，难道是啥补充状语？
This process is called “the business plan cycle”. In some businesses, the cycle may be a continuous process with the plan being regularly updated and monitored. 这里的being可否省略，直接写成with the plan regularly updated and monitored=with sth done？
Researchers trained mice to press levers in response to certain cues
until the behavior became a habit.这里的in response to该当什么讲？应该是训练老鼠一收到cues信息刺激就会press levers？检索到这个问题 https://www.cpsenglish.com/question/27367老师在这个问题里...
老师好。例句如下：I took home a big box to put my son's toy in.这里took home a big box是双宾语吗？home是副词，我实在没搞明白这是什么结构。另外to put作什么结构呢，逻辑主语是I，所以我觉得目的状语，定语都对，但是不能作宾补。put......
...t. It is a pity that all fruits
and flowers, and animals too, except those with good names, could not be passed
in review before somebody with a genius for christening, as the creatures did
before Adam in paradise, and so have new names given them, worthy oftheir
creation. 摘自《美国语文》...
...by不是被动结构吧？我认为是以下类似的用法：used to show the degree or amount of sth （表示程度、数量）The bullet missed him by two inches. 子弹只差两英寸就击中他了。 House prices went up by 10%. 房价上涨了10%。It would be better by far (= much better) ...
On retirement from the company, an employee, be he a secetary or CEO, presented with a gift pack containing a selection ofits products.
句中的虚拟语气的意思应该是无论是秘书还是总裁， 这里是省略了if还是no matter 呢？